.nav {
    background-color: #54bf8e;
    color: #fff;
}

.content {
    position: fixed;
    top: 50px;
    left: 0;
    right: 0px;
    bottom: 49px;
}


.block {
    height: 88px;
}
.ignore-pull-down1,
.ignore-pull-down2 {
    height: 80px;
    width: 100vw;
    text-align: center;
    position: absolute;
    top: -80px;
    line-height: 80px;
}
.ignore-pull-down2 {
    line-height: 120px;
}
.loading {
    width: 60px;
    height: 20px;
    background-color: pink;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate3d(-50%, 0, 0);
    display: flex;
}
.ball1,
.ball2,
.ball3 {
    width: 10px;
    height: 10px;
    background-color: #4fc08d;
    border-radius: 50%;
    position: absolute;
    bottom: 10px;
}
.ball1 {
    right: calc(50% + 15px);
}
.ball2 {
    left: calc(50% - 5px);
}
.ball3 {
    left: calc(50% + 15px);
}
.ball1 {
    animation: loading 1.2s linear infinite;
}
.ball2 {
    animation: loading 1.2s 0.4s linear infinite;
}
.ball3 {
    animation: loading 1.2s 0.8s linear infinite;
}
@keyframes loading {
    16.667% {
        transform: scale(2);
    }
    33.333% {
        transform: scale(1);
    }
    100% {
        transform: scale(1);
    }
}
